uranousadj.
/ˈjʊərənəs/, /ˈjɔːrənəs/, U.S. /ˈjʊrənəs/, /jʊˈreɪnəs/ 1. Chemistry. Of or relating to uranium in one of its lower oxidation states (often +4); designating such a state. Contrasted with uranic adj.1
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the world > matter > chemistry > elements and compounds > metals > specific elements > uranium > [adjective] > compounds > lower oxide
uranious1832
uranous1835
1835 C. U. Shepard Treat. Mineral.: 2nd Pt. II. 301 (table) Oxide... Uranous. Pitchblende.
1842 T. Graham Elements Chem. ii. v. 643 The uranous sulphate yields, by evaporation, green prismatic crystals.
1866 H. E. Roscoe Lessons Elem. Chem. xxiii. 203 There are two oxides which form salts, viz., uranous oxide, UO, and uranic oxide, U2O3.
1911 H. C. Jones & W. W. Strong Absorption Spectra Solutions Comparatively Rare Salts iv. 60 In addition to the ordinary uranous and uranyl bands, there is a weak band about 15 Ångström units wide.
1982 T. I. Williams Short Hist. 20th-cent. Technol. v. 57 The uranium metal was extracted by a series of chemical reactions, involving successively uranyl nitrate, uranium trioxide, and uranous oxide.
2009 Nucl. Engin. Internat. (Nexis) 29 Jan. 20 The organic solvent containing uranium and plutonium is then sent to a second pulsed column containing a nitric acid solution with uranous nitrate, U(NO3)4.
2. gen. Relating to or containing uranium as an element. rare.
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the world > matter > chemistry > elements and compounds > metals > specific elements > uranium > [adjective]
uraniferous1835
uranous1895
1895 W. de W. Abney & L. Clark Platinotype 15 St. Victor..is said to have exposed a piece of paper coated with uranium nitrate, and developed the scarcely visible uranous image with solutions of gold or platinum.
1963 P. E. Johnston in Burning Spear 43 Leopold, brother in negritude, I sing Of He [sic] showers and uranous rain.
This entry has been updated (OED Third Edition, March 2012; most recently modified version published online December 2021).
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adj.1835